Dump body



R. E. SMITH May 22, 1934.

DUMP BODY Filed June 1'6, 193Q 5 Sheets-Sheet Yl /NVENTR TTORNEY 5 Sheets-Sheet 2 A TTORNEY` R. E. SMITH May 22, 1934.

DUMP BODY Filed June 16, 1930 R. E. SMITH May 22, 1934.

DUMP BODY O 5 Sheets-Sheet 3 Filed June 16, 19

[N VNTOR A TTORNE YJ' R. E. SMITH May 22, 1934.

DUMP BODY Filed June 16, 1930 5 Sheets-Sheet 4 A TTORNE Ya May 22, 1934.

R. E. SMITH DUMP BODY Filed June 16, 1930 5 Sheets-Shet 5 ATTRNEY Patented May 22, 1934 i Unirse ArtNr ortica Galion Metallic Vault a corporation of Ohio Company, Galion, Ohio,

Application `.lune 16, 1930, Serial No. 461,292

14 Claims.

My invention relates to dump bodies for automotive vehicles.

It is my object to provide a self-dumping dump body when it is loaded and a self-returning body .when it is empty.

It is my object to provide a body that will have a smooth, even operation in both directions due to the fact that the center of gravity of the loaded body travels in an arc.

It is a further object to provide a body which has a predetermined horizontal movement at the beginning of the dumping movement and at the end of the returning movement to effect latching of the body to its support.

It is a further object of my invention to provide independent tracks that do not intersect and are completely operative independently one of the other.

It is my object to provide a body supported by side brackets carrying rollers which are adapted to travel in the independent tracks as a unit with the brackets.

It is a further object to provide lifting mechanism preferably connected to such brackets, that have a thrust substantially parallel to the tracks and the movement of the rollers on the tracks in order to facilitate dumping.

It is a further object to provide means of driving the power dumping mechanism either when the body is self-dumping or not self-dumping so that the driving mechanism will be self-cleaning and will be so operative as to be easily located between the body and the supporting chassis with out interfering with the dumping mechanism or the latching mechanism.

Referring tothe drawings:

Figure 1 is a side elevation of the complete dumping mechanism and of the dump body mounted upon the rear end of a chassis;

Figure 2 is a detail view of the power shaft drive for this purpose;

Figure 3 is a section through the self-cleaning universal joint utilized in the power drive;

Figure i is a side elevation showing the dumpu ing mechanism and the body in dumped position;

Figure 5 is a detail View showing the position of the body in normal horizontal position and in dumping position together with an indication of the position of the rollers and supporting bracket;

Figure 6 is a top plan view with 'the body removed showing in dotted lines all the vmechanism for dumping the body and guiding it in its dumping movement;

Figure 7 is a side elevation partially in section of the track mechanism made in separable parts with a common side bracketconnecting the two rollers used in the respective tracks and showing the body in its horizontal position and in its dump ing position.

Referring to the drawings in detail, l 'is the side bar of the chassis frame, which has a trans'- verse member `2 for supporting the universal joint 3 of the power shaft Il. This power shaft has a series of universal joints. r-Ifhe forward universal joint shown in section in Figure 3 'is driven at one end by the driving shaft 5 `connected to the engine on which is mounted a sleeve 6. mounting is through a key 7. A bearing sleeve 8 is also provided for receiving the shaft 45 within the sleeve 6. The sleeve 6 terminates in a pros jecting head 8' having a ball 9 with the trainsverse pin therethrough having ends 1`0 moi/ably mounted within grooves ll out longitudinally of the sleeve 13. The major normal diameter of the sleeve is indicated at 14'. This sleeve is mounted upon a driven shaft, such as Il.y by a shear pin y1&3 mounted through the hole 16 in the sleeve 18. The ball 9 rocks within the aperture 14 while the pin ends 10 in the grooves 11 serve to rotate the sleeve 13 and the attached shaft 4. It will be noted that, when the general direction of the shaft changes as at the left hand end of `Figure 2, a gap 1'7 is left so that any accumulated dirt will be continuously discharged as the shafts with their universal joints rotate. The nal driven shaft 18 drives suitable gearing within the gear box 19 which, in turn, drives a shaft 2G having a pinion 21 that operates thev master gear 22 that is carried on the shaft 23 which, in turn, is supe ported on the bearings 24 that are mounted upon the short longitudinal members 25 which are carried on the transverse members 26 which are, in turn, mounted upon the sub-frame members 27. These sub-frame members 27 rare attached by bolts 28 to the side frame members 1 of the chassis. The sub-frame is provided with cross members 29 and 30.

Mounted upon the sub-frame on either side of the track are castings comprising a bed plate 31,', side plate 32 having ribs 33 and U-shaped track members diagonally disposed. These U-shaped track members have side walls 34 and top Vand bottom walls 35 and 36. The rollers 37 and 38 being respectively the front and rear rollersy have flanges 39 for ridingon the outside of the mem-- bers 35 and 36 in front and the members 40 and 41 in the rear which form the rear track with the side Wall 42. i

The forward track at its lower forward end has lli) a horizontal portion 43, the upper and lower` portions 43 and 44 being substantially parallel. The end of the track forwardly is closed at 45. The rear end of the forward track is closed by an arcuate wall 46 which limits the rearward movement of the front roller 37. This rear wall is spaced from the front wall 47 which limits the forward movement of the rear roller 38. This roller rests within an arcuate depression 48 in the rear track at its forward upper end. The upper wall 41 adjacent and above this depression is also arcuate as at 49 thus forming with the front wall 47 walls surrounding about two-thirds of the rear roller 38. The purpose of this depression or dwell is to give a resting place for the rear roller when the body is in its horizontal running position to prevent it having a tendency to move backwardly and forwardly and to rattle. This rear track extends downwardly and rearwardly into a slightly horizontal portion 50 to give some horizontal movement of limited degree at the end of the dumping movement of the body.

The rollers 37 and 38 are pivotally mounted on axles 51 and 52 in the front and rear ends respectively of the roller side frames designated 53 having a long front leg 54 engaging the trans- .verse body member 55 and a short rear leg 56 engaging thetransverse angle iron brace 57 of the body. An arcuate bridge 58 joins the axles 51 and 52 and an arcuate bridge member 59 joins Vthe cross frame members 55 and 57 of the body.

The forward leg 54 is provided with a pair of ears 60 for receiving the cross pin 61 on which is pivotally mounted one of the pitmen 62 that are connected pivotally at 63 to the crank 64 mounted on the shaft 23.

These tracks are mounted within the side frames 27 and face inwardly where they are partially concealed from the dirt and debris falling from the body.

It will be noted that the axes ma' and yy of the tracks do not intersect at a point within the track areas or the enclosure of the walls forming the tracks. They are complete and independent. In Figure 7 this is carried even further in that the front and rear track members are independent physically having adjacent but separated walls 65 and 66 and are independently bolted to the sub-frame by the bolts 67 and 68 on the one hand and 69 and 7D on the other.

Turning tothe body, it will be noted that the body rests upon the side frames 53 which engage the cross members 55 and 57 of the body 71. The body is formed with side rails 72 joined together by the transverse members 55 and 57 and braced by a transverse diagonal bolt, the ends of which are seen projecting in Figures 1 and 4 as at 73 through the corner plate 74. Side board retaining members at the forward end are designated l75. Beneath the forward ends of the side rails 72 are forwardly extending hooks 76 which are adapted to slide within the retaining eyes 77 which are mounted on either side of the transverse supporting bar 78 which is mounted at either end upon the standards 79.

In order to latch the body in its horizontal position, I provide the following latching mechanism:

On the bottom of the body is an eye 80 that receives a reciprocating iinger 81 that is pivoted at 82 upon the cross member 78 and is yieldingly positioned by the spring 83. As hereinafter described, this member is actuated preferably from a point adjacent the cab shown in dotted lines at 84and acts as analarm or notice to the driver to shut off his power operation of the body.

The body itself is provided with a tail member 85 pivoted at 86 and with rear supports 87 for extra side boards, the forward ends of which are carried in the forward side board holders 75.

In operation, as will be seen in Figure 4, the center of gravity of the loaded body with the normal load is approximately at the point 88. As this point travels about the fulcrum point of the center of the axle 51 and as that axle travels rearwardly, this point 88 follows along the line indicated at 89 to its nal resting place at 90.

It will be understood that I desire to comprehend within my invention such modifications as may be necessary to adapt it to varying conditions and uses.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent, is:

1. In combination, a body, side frames carried thereby having legs of unequal length, rollers on the bottoms of said legs and independent tracks for guiding said rollers, said tracks and frames being arranged in pairs, the tracks being arranged Yone in front of the other in each pair, the forward of said tracks having a lower horizontal portion longer than the diameter of the rollers and a straight upwardly extending diagonal portion, and interengaging locking means on the body and side frames caused to engage by the movement of the body when lthe body is supported by the rollers on the horizontal portion of the tracks.

2. In combination, a body, side frames carried thereby having legs of unequal length, rollers on the bottoms of said legs and independent tracks for guiding said rollers, said tracks and frames being arranged in pairs, the tracks being arranged one in front of 'the other in each pair, the forward of said tracks having a lower horizontal portion longer than the diameter of the rollers and a straight upwardly extending diagonal portion, and the rear track having a dwell portion at its forward end and an arcuate downwardly extending portion to a level with the front end of the forward track.

3. In combination, a chassis, a sub-frame, a

body, means for supporting the forward end of the body in spaced relationship to the sub-frame, rearwardly disposed side roller frames having rollers at the forward and rear ends thereof and adapted to support the body in a horizontal plane in its normal position, independent aligned track members for said rollers on either side of said sub-frame, the front track member extending from the sub-frame rearwardly and upwardly and the rear track member extending rearwardly and downwardly from adjacent the body to the subframe, hooks on the under side of the forward end 12;:-1

of the body for slidably engaging the forward support for the body, and means in said tracks for permitting sufncient horizontal movement of the body to disengage said hooks prior to the tilting of the body by the movement of the rollers on said tracks.

4. In combination in a guide track for dumping bodies, a pair of independent oppositely inclined spaced U-shaped track members, horizontally-disposed portions in the forward track member at its lower end for guiding a roller horizontally before it is guided upwardly and diagonally, means cooperating with the horizontally disposed portions to lock the body in a horizontal position, and means in the forward upper 3]. ftd' Tal .una

end of the rear track member for receiving and supporting a roller before it moves rearwardly and downwardly.

5. In combination, a sub-frame, a body, means of supporting the forward end of the body in spaced relationship from the sub-frame, depending roller frames from said body, rollers thereon, tracks carried b-y saidV sub-frame projecting upwardly towards said body for receiving and guiding said rollers, and power mechanism connected to said roller frames between the body and the sub-frame, said power mechanism being located between the body and the sub-frame, said power means comprising pitmen attached to the roller frames and arranged to have their line of thrust substantially parallel to the plane of movement of a portion of the rollers in a portion of the tracks on the sub-frame.

6. In combination, a body, depending side frames having a forward long leg and a rearward short leg, pitmen connected to the forward legs, means for supporting the forward end of the body in its horizontal position, the rear end being supported by said legs of the side frames, rollers on said side frames, tracks for said rollers to guide said body in an arcuate path when it is moved from its horizontal position to its dumping position, and power means for operating said pitmen in a line substantially parallel to the line of movement of the forward legs.

7. In combination, a body, depending side frames having a forward long leg and a rearward short leg, pitmen connected to the forward legs, means for supporting the forward end of the body in its horizontal position, the rear end being supported by said legs of the side frames, rollers on said side frames, tracks for said rollers to guide said body in an arcuate path when it is moved from its horizontal position to its dumping position, and power means for operating said pitmen in a line substantially parallel to the line of movement of the forward legs, spaced side members of the sub-frame carrying said track members, and an intermediate frame therebetween, and power means on said intermediate frame for operating said pitmen.

8. In combination, a body, depending side frames having a forward long leg and a rearward short leg, pitmen connected to the forward legs, means for supporting the forward end of the body in its horizontal position, the rear end being supported by said legs of the side frames, rollers on said side frames, tracks'for said rollers to guide said body Yin an arcuate path when it is moved from its horizontal position to its dumping position, and power means for operating said pitmen in a line substantially parallel to the line of movement of the forward legs, spaced side members of the sub-frame carrying said track members, and an intermediate frame therebetween, and power means on said intermediate frame for operating said pitmen, said power means comprising gear and cranks connected thereto and operated thereby connected to said pitmen.

9. In combination, spaced side members of a sub-frame, an intermediate frame carried thereby, gearing supported by the intermediate frame, cranks driven by said gearing between the intermediate frame andV the side members of the subfrarne, pitmen operated by said cranks, within the sub-frame, a body, a depending roller carrying member attached to said pitmen, rollers on said member and tracks for said rollers mounted c on said sub-frame.

body in its horizontal position, and means supporting said mechanism attached to said subframe for supporting the forward end of the body inY its horizontal position.

11. In a dump body, an inclined rear track having its lower end in a concave arc and its upper end formed into a dwell, a front trackway declining from the upper end of the rst trackway and having its lower end terminating in a horizontal portion, and a roller frame having front rollers engaging the front trackway and rear rollers engaging the rear trackway so that when the rear rollers are at the lowest point of the rear trackway the front rollers are at the highest point of the front trackway and when the rear rollers are at the highest point of the rear trackway the front rollers are at the lowest point of the front trackway.

12. In a dump body, an inclined rear track having its lower end in a concave arc and its upper end formed into a dwell, a front trackway declining from the upper end of the first trackway and having its lower end terminating in a horizontal portion, a roller frame having front rollers engaging the front trackway and rear rollers engaging the rear trackway so that when the rear rollers are at the lowest point of the rear trackway the front rollers are at the highest point of the front trackway and when the rear rollers are at the highest point of the rear trackway the front rollers are at the lowest point of the front trackway, and a body supported by said roller frame so that when the body is in a horizontal position its center is substantially over the front rollers.

13. In combination, a dump body, a pair of rollers on each side of the body to the rear of the center of the body, one roller of each pair being in front of the other, and a pair of trackways for each pair of rollers, one, a rear trackway, extending upwardly and forwardly in a concave arc and a convex arc terminating in a roller` seat and the other, a forward trackway, extending downwardly and forwardly in a straight line and terminating in a horizontal part to give the forward end of the body in each dumping operation an initial horizontal movement and a final horizontal movement.

14. In combination, a dump body, a pair of rollers on each side of the body to the rear of its center, one roller of each pair being in front of the other and more remote from the body, and a pair of trackways for each pair of rollers, one a rear trackway, extending upwardly and forwardly in a concave arc and a convex arc terminating in a roller seat and the other, a forward trackway, extending downwardly and forwardly in a straight line and terminating in a horizontal part to give the forward end of the body in each dumping operation an initial horizontal movement and a nal horizontal movement.

RALPH E. SMITH. 

